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JPL Small-Body Database Browser
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1549 Mikko (1937 GA)
Classification: Main-belt Asteroid          SPK-ID: 2001549
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08438144187295545 2.8032e-08  
a 2.230738963069398 5.7791e-09 au
q 2.04250599292342 6.2846e-08 au
i 5.548449659160255 3.3341e-06 deg
node 85.28602654111209 4.0301e-05 deg
peri 6.520633650998318 4.7819e-05 deg
M 311.8999347752095 2.6164e-05 deg
tp 2458763.097820823840
(2019-Oct-06.59782082)
8.8662e-05 TDB
period 1216.946696912452
3.33
4.729e-06
1.295e-08
d
yr
n .2958223239467805 1.1496e-09 deg/d
Q 2.418971933215375 6.2667e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3543  
   data-arc span      26562 days (72.72 yr)  
   first obs. used      1947-03-18  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36663  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:02:00  

Additional Information
 Earth MOID = 1.05923 au 
 Jupiter MOID = 2.70685 au 
 T_jup = 3.631 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.3   n/a MPO416722  
diameter diameter 10.376 km 0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.74 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Fauerbach, M. (2019) Minor Planet Bull. 46, 15-19.]
geometric albedo albedo 0.359   0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1549 Mikko (1937 GA)          Discovered 1937-Apr-02 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1937 GA = 1935 SG1 = 1940 AO = 1949 YV = 1951 ME 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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